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Posted

hey so the other day i was heading to mu aunts when all of a sudden i couldn't go past second. stopped at her place since i was just down the road when it happened. checked fluids and it was ok. topped it up+ added stop slip. now when i drive first gear refuses to shift before 3k then has a super slow yet hard shift. and when i am driving unless I'm doing the speed limit collated with the rpm. nothing will happen/ the rpms with drop and the truck coasts like it's in neutral. 

 

i swapped the tranny fuse (fuse #4) to see if that would do anything and it didn't. 

 

would it be the 3rd/4th clutch packs? or more of a torque converter?

 

from what i have read online .

 

the truck doesn't throw any check lights. not sure about codes as i don't have a code reader.

 

also i cannot use the column shifter. as when i try to manually shift any of the gears it just revs and acts like neutral. 

 

 

 

Posted

The 4L60E has somecweek parts, i got mine rebuilt to 4L70E specs for add'l $$$, worth every Nicole. More clutches, other stuff. Only use AC Delco Dex 6 in the tranny and Xfer case.

Posted

Trans codes may not light the CEL, take it to the parts store and get it scanned, post the codes AND their definitions here and I'm sure someone will respond

Posted

3-4 clutch pack is smoked. Common problem on the 4l60e. Trans will have to come out and be overhauled. They are a weak unit to begin with.

Posted

B.S. My 4L60E in my 93 Silverado went over 200k miles and I towed with it. Fluid service very 30k miles. I put a drain plug in the trans pan, drain and fill. I used Valvoline trans max.  

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Posted
3 hours ago, mjm-1957 said:

3-4 clutch pack is smoked. Common problem on the 4l60e. Trans will have to come out and be overhauled. They are a weak unit to begin with.

 

Guys that break these units are running them boosted, on NOS, overloaded, overheated or not maintaining them. :banghead:

 

And yes, the 3/4 clutch drum is 'usually' the first thing to go. But does not operating within design and failing to maintain make the unit weak? Or the operator.....:idiot:

 

1 hour ago, diyer2 said:

B.S. My 4L60E in my 93 Silverado went over 200k miles and I towed with it. Fluid service very 30k miles. I put a drain plug in the trans pan, drain and fill. I used Valvoline trans max.  

 

Yea, this is a well maintained unit that was used 'as designed'. Tip O' the Hat sir. 😉 

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